Brake non-return mechanism of speed reducer of oil pumping unit

Abstract

The utility model relates to the technical field of speed reducers, and discloses an oil pumping unit speed reducer braking non-return mechanism which comprises a speed reducer, a transmission column is arranged in the speed reducer, a braking assembly is arranged on the outer wall of the transmission column and comprises a ratchet gear and a clamping column, the inner wall of the ratchet gear is fixedly connected to the outer wall of the transmission column, and the clamping column is arranged on the inner wall of the ratchet gear. The outer wall of the speed reducer is rotationally connected with a rotating column, the inner wall of the clamping column is fixedly connected to the outer wall of the rotating column, the clamping column is clamped with the ratchet gear, the outer wall of the speed reducer is fixedly connected with a motor, and the output end of the motor is fixedly connected with a worm. According to the brake non-return mechanism, when non-return is needed, the motor is started, the worm and gear transmission device is driven, the clamping column is accurately controlled to move, the clamping column is stably clamped on the ratchet wheel, the clamping action is completed, the problems that a traditional brake non-return mechanism is slow in response and poor in reliability are solved, the stability and safety of operation of the pumping unit are greatly improved, and the service life of the pumping unit is prolonged. And reliable operation of equipment under complex working conditions is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, and in particular to a braking and backstop mechanism for a pumping unit speed reducer. Background Technology

[0002] In modern oil extraction operations, pumping units are core equipment, and their stable and efficient operation is crucial. The pumping unit reducer, as a key component, is responsible for reducing speed and increasing torque. The braking and backstop mechanism is a critical link in ensuring the safe operation of the pumping unit. When the pumping unit needs to be stopped urgently or when dealing with complex working conditions, the braking and backstop mechanism must respond quickly and effectively prevent reverse rotation. Otherwise, it will cause a series of safety accidents and equipment damage. Therefore, the development of high-performance braking and backstop mechanisms for pumping unit reducers has become a direction of continuous exploration in the industry.

[0003] Currently, traditional pumping unit reducer braking and backstop mechanisms mostly employ relatively simple mechanical structures. Common methods include using mechanical brakes for braking and gravity or simple spring mechanisms for backstopping. When braking, the mechanical brake relies on friction to stop the drive shaft from rotating. Backstopping usually relies on some basic unidirectional mechanical structures, such as a simple pawl and ratchet mechanism, where the pawl naturally engages with the ratchet teeth to prevent reverse rotation. These structures are relatively basic in design and have simple technical principles, which present many challenges in the complex and variable environment of oil extraction.

[0004] However, traditional braking and backstop mechanisms have a prominent problem: slow response speed and poor reliability. In actual operation of pumping units, when encountering sudden situations requiring emergency braking or preventing reverse rotation, the mechanical brake's response mechanism is relatively slow, making it unable to quickly and effectively stop the drive shaft from rotating, resulting in prolonged braking time. At the same time, the simple backstop method involving a pawl and ratchet is prone to the pawl dislodging from the ratchet teeth under complex working conditions, such as encountering large impact loads or irregular operating conditions, making it difficult to reliably achieve the backstop function. This greatly affects the stability and safety of pumping unit operation and cannot guarantee reliable operation of the equipment under complex working conditions. Therefore, a braking and backstop mechanism for pumping unit reducers is proposed to solve the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a braking backstop mechanism for a pumping unit reducer, which aims to improve the problems of slow response and poor reliability of traditional braking backstop mechanisms in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A braking and backstop mechanism for a pumping unit reducer includes a reducer, wherein a transmission column is provided inside the reducer, and a braking component is provided on the outer wall of the transmission column;

[0008] The braking assembly includes a gear and a locking pin. The inner wall of the gear is fixedly connected to the outer wall of the transmission column. A rotating column is rotatably connected to the outer wall of the reducer. The inner wall of the locking pin is fixedly connected to the outer wall of the rotating column. The locking pin engages with the gear. A motor is fixedly connected to the outer wall of the reducer. A worm gear is fixedly connected to the output end of the motor. A worm wheel is fixedly connected to the outer wall of the rotating column. The worm gear meshes with the worm wheel. A disassembly assembly is provided inside the rotating column.

[0009] As a further description of the above technical solution:

[0010] The assembly / disassembly assembly includes a fixing post and a slot formed inside the fixing post, with the outer wall of the fixing post slidably connected to the slot.

[0011] As a further description of the above technical solution:

[0012] The outer wall of the fixed column is slidably connected to the inside of the rotating column, and a limiting disc is fixedly connected to the outer wall of the fixed column.

[0013] As a further description of the above technical solution:

[0014] A limiting groove is formed inside the rotating column, and the outer wall of the limiting disk is slidably connected inside the limiting groove.

[0015] As a further description of the above technical solution:

[0016] A spring is fitted on the outer wall of the fixed column. One end of the spring is fixedly connected to the outer wall of the limiting disc, and the other end of the spring is fixedly connected to the inner wall of the limiting groove.

[0017] As a further description of the above technical solution:

[0018] The rotating column is rotatably connected to a turntable, and the turntable has a limiting groove inside.

[0019] As a further description of the above technical solution:

[0020] A sliding column is fixedly connected inside the fixed column, and the outer wall of the sliding column is slidably connected inside the limiting groove.

[0021] As a further description of the above technical solution:

[0022] A connecting column is fixedly connected to one side of the turntable, and a knob is fixedly connected to the other end of the connecting column.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, when anti-reverse stop is required, the motor starts and drives the worm gear transmission device to precisely control the movement of the locking pin, so that it is firmly locked on the ratchet and the locking action is completed. This solves the problems of slow response and poor reliability of traditional braking and anti-reverse mechanisms, greatly improves the stability and safety of the pumping unit operation, and ensures the reliable operation of the equipment under complex working conditions.

[0025] 2. In this utility model, the fixed column moves by rotating a knob. When the knob is rotated, the knob drives the sliding column and the limiting disc, and in conjunction with the spring, the fixed column rotates inside the slot, thus facilitating the disassembly and assembly of the card plate and making it easy to maintain and replace. This solves the problem that existing devices require multiple tools to disassemble and assemble, making disassembly inconvenient and improving the convenience of the device. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a braking and backstop mechanism for a pumping unit reducer proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the internal structure of the locking pin of the braking and backstop mechanism of the oil pump reducer proposed in this utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the rotating column of the braking and backstop mechanism of the oil pump reducer proposed in this utility model.

[0029] Legend:

[0030] 1. Reducer; 2. Rotating column; 3. Worm gear; 4. Motor; 5. Worm wheel; 6. Locking column; 7. Gear; 8. Transmission column; 9. Knob; 10. Connecting column; 11. Fixing column; 12. Locking groove; 13. Limiting disc; 14. Spring; 15. Turntable; 16. Limiting groove; 17. Sliding column; 18. Limiting groove. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1The present invention provides an embodiment of a pumping unit reducer braking and backstop mechanism, comprising a reducer 1, a transmission column 8 disposed inside the reducer 1, and a braking assembly disposed on the outer wall of the transmission column 8;

[0033] The braking assembly includes a gear 7 and a locking pin 6. The inner wall of the gear 7 is fixedly connected to the outer wall of the transmission column 8, ensuring that the two can rotate synchronously. The gear 7 is made of special alloy steel and undergoes surface hardening treatment, giving its tooth surface high hardness and good wear resistance. Its tooth profile design is carefully optimized to achieve a tight engagement with the locking pin 6, effectively transmitting braking force. A rotating column 2 is rotatably connected to the outer wall of the reducer 1. The inner wall of the locking pin 6 is fixedly connected to the outer wall of the rotating column 2, and the locking pin 6 engages with the gear 7. The locking pin 6 is generally made of high-strength tool steel, with high hardness and impact resistance, and can withstand large forces during braking. When the locking pin 6 engages with the gear 7, it can accurately engage between the teeth of the gear 7 to achieve the braking function. A motor 4 is fixedly connected to the outer wall of the reducer 1, and a worm gear 3 is fixedly connected to the output end of the motor 4. A worm wheel 5 is fixedly connected to the outer wall of the rotating column 2, and the worm gear 3 meshes with the worm wheel 5. A disassembly assembly is provided inside the rotating column 2.

[0034] Specifically, during the actual operation of the pumping unit, braking the reducer 1 is a key operation to ensure its safe and stable operation. When it is necessary to brake the reducer 1, the operator can start the motor 4. After the motor 4 starts running, it will drive the worm 3 connected to it to rotate. Since there is a specific meshing relationship between the worm 3 and the rotating column 2, the rotation of the worm 3 will drive the rotating column 2 to rotate synchronously. The rotation of the rotating column 2 will drive the locking pin 6 to rotate until the locking pin 6 moves to the outer wall of the gear 7. Once the reducer 1 shows a reverse trend, the locking pin 6 will quickly lock into the teeth of the gear 7, effectively preventing the reducer 1 from continuing to reverse, thus protecting the reducer 1.

[0035] Reference Figures 1-3The assembly and disassembly components include a fixed post 11 and a slot 12 formed inside the slot 6. The outer wall of the fixed post 11 is slidably connected to the slot 12. The fixed post 11 is made of high-strength stainless steel, which not only has good corrosion resistance but also ensures that its performance will not be affected by rust during long-term use. Its outer wall is precision ground to achieve extremely low surface roughness, ensuring smooth sliding within the slot 12 and the rotating post 2. The outer wall of the fixed post 11 is slidably connected to the rotating post 2. A limiting disc 13 is fixedly connected to the outer wall of the fixed post 11. A limiting groove 18 is formed inside the rotating post 2. The outer wall of the limiting disc 13 is slidably connected to the limiting groove 18. The shape of the limiting groove 18 matches the limiting disc 13. The outer wall of the limiting disc 13 can slide flexibly within the limiting groove 18, thus limiting the fixed post 11 and preventing it from sliding excessively and disengaging from its normal working position. A spring is fitted on the outer wall of the fixed post 11. 14. One end of spring 14 is fixedly connected to the outer wall of limiting disc 13, and the other end of spring 14 is fixedly connected to the inner wall of limiting groove 18. A turntable 15 is rotatably connected inside the rotating column 2. A limiting groove 16 is opened inside the turntable 15. The shape of the limiting groove 16 is carefully designed to be curved to achieve precise control of sliding column 17. The sliding column 17 is fixedly connected inside the fixed column 11. The outer wall of the sliding column 17 is slidably connected to the inside of limiting groove 16. A connecting column 10 is fixedly connected to one side of the turntable 15. A knob 9 is fixedly connected to the other end of the connecting column 10. The surface of the knob 9 is knurled to increase friction and facilitate the operator's rotation.

[0036] Specifically, during the long-term use of the pumping unit reducer braking backstop mechanism, the locking pin 6, as a key component, will gradually show wear and tear, requiring maintenance or replacement. When the locking pin 6 needs maintenance after prolonged use, the operator can rotate the knob 9. Rotating the knob 9 will cause the connected connecting pin 10 to rotate synchronously. Since the connecting pin 10 is connected to the turntable 15, the rotation of the connecting pin 10 will in turn drive the turntable 15 to rotate. The turntable 15 has a limiting groove 16 inside. As the turntable 15 rotates, the limiting groove 16 also rotates, which will drive the pin located in the turntable 15 to rotate. The internal sliding column 17 slides, causing the fixing column 11 to slide out of the slot 12, releasing the restriction on the locking column 6. At the same time, the sliding column 17 also drives the limiting disc 13 to move, thereby compressing the spring 14. At this time, the operator can remove the locking column 6 for maintenance. After maintenance, the locking column 6 is put back in its original position, the knob 9 is released, the spring 14 rebounds, and the fixing column 11 is re-engaged in the slot 12, thus re-fixing the locking column 6. The whole process is convenient and efficient, greatly improving the efficiency of maintenance and replacement.

[0037] Working principle: When braking and stopping the reducer 1, the motor 4 can be started. The motor 4 drives the worm 3 to rotate. Then, through the meshing between the worm 3 and the motor 4, the rotating column 2 is driven to rotate, thereby driving the locking pin 6 to rotate to the outer wall of the gear 7. When reverse rotation occurs, the locking pin 6 is locked between the teeth of the gear 7 to prevent further reverse rotation and protect the reducer 1.

[0038] In addition, when the locking post 6 is used for a long time, the knob 9 can be turned to drive the connecting post 10 to rotate, which in turn drives the turntable 15 to rotate. The turntable 15 then drives the internal limiting groove 16 to rotate, which in turn drives the internal sliding post 17 to slide, allowing the fixing post 11 to slide out of the locking groove 12 and release the restriction. At the same time, the limiting disc 13 moves, compressing the spring 14, so that the locking post 6 can be removed for maintenance. After that, it can be put back, the knob 9 can be released, and the spring 14 will rebound to drive the fixing post 11 to re-lock inside the locking groove 12 for fixation, thus facilitating its maintenance and replacement.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A brake backstop mechanism for a pumping unit reduction gear, comprising a reduction gear (1), characterized in that: The speed reducer (1) is internally provided with a transmission column (8), and the outer wall of the transmission column (8) is provided with a brake assembly; The brake assembly comprises a pinion (7) and a clamping column (6), the inner wall of the pinion (7) is fixedly connected to the outer wall of the transmission column (8), the outer wall of the speed reducer (1) is rotatably connected with a rotating column (2), the inner wall of the clamping column (6) is fixedly connected to the outer wall of the rotating column (2), the clamping column (6) is clamped with the pinion (7), the outer wall of the speed reducer (1) is fixedly connected with a motor (4), the output end of the motor (4) is fixedly connected with a worm (3), the outer wall of the rotating column (2) is fixedly connected with a worm wheel (5), the worm (3) is engaged with the worm wheel (5), and the rotating column (2) is internally provided with a dismounting assembly.

2. A pumping unit reducer brake and backstop mechanism according to claim 1, characterized in that: The dismounting assembly comprises a fixed column (11) and a clamping groove (12) formed in the inner part of the clamping column (6), and the outer wall of the fixed column (11) is slidably connected in the inner part of the clamping groove (12).

3. A pumping unit reducer brake and backstop mechanism according to claim 2, characterized in that: The outer wall of the fixed column (11) is slidably connected in the inner part of the rotating column (2), and the outer wall of the fixed column (11) is fixedly connected with a limiting disc (13).

4. A pumping unit reducer brake and backstop mechanism according to claim 3, characterized in that: The inner part of the rotating column (2) is provided with a limiting groove (18), and the outer wall of the limiting disc (13) is slidably connected in the inner part of the limiting groove (18).

5. A pumping unit reducer brake and backstop mechanism according to claim 4, characterized in that: The outer wall of the fixed column (11) is sleeved with a spring (14), one end of the spring (14) is fixedly connected to the outer wall of the limiting disc (13), and the other end of the spring (14) is fixedly connected to the inner wall of the limiting groove (18).

6. A pumping unit reducer brake and backstop mechanism according to claim 5, characterized in that: The inner part of the rotating column (2) is rotatably connected with a rotating disc (15), and the inner part of the rotating disc (15) is provided with a limiting groove (16).

7. A pumping unit reducer brake and backstop mechanism according to claim 6, characterized in that: The inner part of the fixed column (11) is fixedly connected with a sliding column (17), and the outer wall of the sliding column (17) is slidably connected in the inner part of the limiting groove (16).

8. A pumping unit reducer brake and backstop mechanism according to claim 7, characterized in that: One side of the rotating disc (15) is fixedly connected with a connecting column (10), and the other end of the connecting column (10) is fixedly connected with a rotating knob (9).

Images